feat: mutual translation effect with the target language

src/views/Selection/TranBox.js

@@ -24,6 +24,7 @@ function TranForm({ text, setText, tranboxSetting, transApis }) {
   const [translator, setTranslator] = useState(tranboxSetting.translator);
   const [fromLang, setFromLang] = useState(tranboxSetting.fromLang);
   const [toLang, setToLang] = useState(tranboxSetting.toLang);
+  const [toLang2, setToLang2] = useState(tranboxSetting.toLang2);
   const inputRef = useRef(null);
 
   return (
@@ -150,6 +151,9 @@ function TranForm({ text, setText, tranboxSetting, transApis }) {
         translator={translator}
         fromLang={fromLang}
         toLang={toLang}
+        toLang2={toLang2}
+        setToLang={setToLang}
+        setToLang2={setToLang2}
         transApis={transApis}
       />
     </Stack>

src/views/Selection/TranCont.js

@@ -6,7 +6,7 @@ import Stack from "@mui/material/Stack";
 import { useI18n } from "../../hooks/I18n";
 import { DEFAULT_TRANS_APIS, OPT_TRANS_BAIDU } from "../../config";
 import { useEffect, useState } from "react";
-import { apiTranslate } from "../../apis";
+import { apiTranslate, apiBaiduLangdetect } from "../../apis";
 import { isValidWord } from "../../libs/utils";
 import CopyBtn from "./CopyBtn";
 import DictCont from "./DictCont";
@@ -16,6 +16,9 @@ export default function TranCont({
   translator,
   fromLang,
   toLang,
+  toLang2 = "en",
+  setToLang,
+  setToLang2,
   transApis,
 }) {
   const i18n = useI18n();
@@ -32,6 +35,16 @@ export default function TranCont({
         setError("");
         setDictResult(null);
 
+        // 互译
+        if (toLang !== toLang2 && toLang2 !== "none") {
+          const detectLang = await apiBaiduLangdetect(text);
+          if (detectLang === toLang) {
+            setToLang(toLang2);
+            setToLang2(toLang);
+            return;
+          }
+        }
+
         const apiSetting =
           transApis[translator] || DEFAULT_TRANS_APIS[translator];
         const tranRes = await apiTranslate({
@@ -63,7 +76,16 @@ export default function TranCont({
         setLoading(false);
       }
     })();
-  }, [text, translator, fromLang, toLang, transApis]);
+  }, [
+    text,
+    translator,
+    fromLang,
+    toLang,
+    toLang2,
+    setToLang,
+    setToLang2,
+    transApis,
+  ]);
 
   return (
     <>